A signature birthday in one's life to be certain, but Brown wasn't worried about that number representing a potential decline in his skills on the football field.

"I don't pay attention to my age," the six-time Pro Bowl selection said, via ESPN. "I'm feeling great, I'm healthy and I'm in great shape. I feel as long as I have that, I can continue to be productive.

"... Life is all about challenges and working to be the best. You never want to limp away from the game."

Brown hasn't limped much at all during his NFL career. In fact, his 733 receptions for 9,910 yards are more than any other wideout since he entered the league as a sixth-round pick of the Steelers in the 2010 NFL Draft.

Signed to a four-year, $68 million contract extension in February 2017, Brown went out and had 101 receptions for an NFL-best 1,533 yards and nine touchdowns in 14 games this past season. As a result, Brown won the AFC Offensive Player of the Year Award after recording his fifth consecutive 100-catch season.

For those wondering, Brown posted pictures to Instagram of how he celebrated his special day. Brown spent time with his family while also working on his football skills.